Initial version of hierarchy_rebld

implement-ainv
Salvatore Filippone 4 years ago
parent 2459441ca6
commit 5731211f69

2
configure vendored

@ -585,7 +585,7 @@ PACKAGE_STRING='AMG4PSBLAS 1.0.0'
PACKAGE_BUGREPORT='https://github.com/sfilippone/amg4psblas/issues'
PACKAGE_URL=''
ac_unique_file="mlprec/mld_prec_type.f90"
ac_unique_file="mlprec/amg_prec_type.f90"
# Factoring default headers for most tests.
ac_includes_default="\
#include <stdio.h>

@ -41,7 +41,7 @@ AC_INIT([AMG4PSBLAS],1.0.0, [https://github.com/sfilippone/amg4psblas/issues])
amg4psblas_cv_version="1.0.0"
# A sample source file
AC_CONFIG_SRCDIR([mlprec/mld_prec_type.f90])
AC_CONFIG_SRCDIR([mlprec/amg_prec_type.f90])
# Our custom M4 macros are in the 'config' directory
AC_CONFIG_MACRO_DIR([config])
AC_MSG_NOTICE([

@ -134,6 +134,7 @@ module amg_d_prec_type
procedure, pass(prec) :: init => amg_dprecinit
procedure, pass(prec) :: build => amg_dprecbld
procedure, pass(prec) :: hierarchy_build => amg_d_hierarchy_bld
procedure, pass(prec) :: hierarchy_rebuild => amg_d_hierarchy_rebld
procedure, pass(prec) :: smoothers_build => amg_d_smoothers_bld
procedure, pass(prec) :: descr => amg_dfile_prec_descr
end type amg_dprec_type
@ -311,6 +312,19 @@ module amg_d_prec_type
end subroutine amg_d_hierarchy_bld
end interface amg_hierarchy_bld
interface amg_hierarchy_rebld
subroutine amg_d_hierarchy_rebld(a,desc_a,prec,info)
import :: psb_dspmat_type, psb_desc_type, psb_dpk_, &
& amg_dprec_type, psb_ipk_
implicit none
type(psb_dspmat_type), intent(in), target :: a
type(psb_desc_type), intent(inout), target :: desc_a
class(amg_dprec_type), intent(inout), target :: prec
integer(psb_ipk_), intent(out) :: info
! character, intent(in),optional :: upd
end subroutine amg_d_hierarchy_rebld
end interface amg_hierarchy_rebld
interface amg_smoothers_bld
subroutine amg_d_smoothers_bld(a,desc_a,prec,info,amold,vmold,imold)
import :: psb_dspmat_type, psb_desc_type, psb_dpk_, &

@ -23,7 +23,7 @@ MPCOBJS=amg_dslud_interface.o amg_zslud_interface.o
DINNEROBJS= amg_dmlprec_bld.o amg_dfile_prec_descr.o \
amg_d_smoothers_bld.o amg_d_hierarchy_bld.o \
amg_d_smoothers_bld.o amg_d_hierarchy_bld.o amg_d_hierarchy_rebld.o \
amg_dmlprec_aply.o \
$(DMPFOBJS) amg_d_extprol_bld.o

@ -0,0 +1,153 @@
!
!
! AMG4PSBLAS version 1.0
! Algebraic Multigrid Package
! based on PSBLAS (Parallel Sparse BLAS version 3.5)
!
! (C) Copyright 2020
!
! Salvatore Filippone
! Pasqua D'Ambra
! Fabio Durastante
!
! Redistribution and use in source and binary forms, with or without
! modification, are permitted provided that the following conditions
! are met:
! 1. Redistributions of source code must retain the above copyright
! notice, this list of conditions and the following disclaimer.
! 2. Redistributions in binary form must reproduce the above copyright
! notice, this list of conditions, and the following disclaimer in the
! documentation and/or other materials provided with the distribution.
! 3. The name of the AMG4PSBLAS group or the names of its contributors may
! not be used to endorse or promote products derived from this
! software without specific written permission.
!
! THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
! ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
! TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
! PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AMG4PSBLAS GROUP OR ITS CONTRIBUTORS
! BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
! CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
! SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
! INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
! CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
! ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
! POSSIBILITY OF SUCH DAMAGE.
!
!
! File: amg_d_hierarchy_bld.f90
!
! Subroutine: amg_d_hierarchy_bld
! Version: real
!
! This routine builds the preconditioner according to the requirements made by
! the user trough the subroutines amg_precinit and amg_precset.
!
! A multilevel preconditioner is regarded as an array of 'one-level' data structures,
! each containing the part of the preconditioner associated to a certain level,
! (for more details see the description of amg_Tonelev_type in amg_prec_type.f90).
! The levels are numbered in increasing order starting from the finest one, i.e.
! level 1 is the finest level. No transfer operators are associated to level 1.
!
!
! Arguments:
! a - type(psb_dspmat_type).
! The sparse matrix structure containing the local part of the
! matrix to be preconditioned.
! desc_a - type(psb_desc_type), input.
! The communication descriptor of a.
! p - type(amg_dprec_type), input/output.
! The preconditioner data structure; upon exit it contains
! the multilevel hierarchy of prolongators, restrictors
! and coarse matrices.
! info - integer, output.
! Error code.
!
subroutine amg_d_hierarchy_rebld(a,desc_a,prec,info)
use psb_base_mod
use amg_d_inner_mod
use amg_d_prec_mod, amg_protect_name => amg_d_hierarchy_rebld
Implicit None
! Arguments
type(psb_dspmat_type),intent(in), target :: a
type(psb_desc_type), intent(inout), target :: desc_a
class(amg_dprec_type),intent(inout),target :: prec
integer(psb_ipk_), intent(out) :: info
! Local Variables
integer(psb_ipk_) :: ictxt, me,np
integer(psb_ipk_) :: err,i,k, err_act, iszv, newsz,&
& nplevs, mxplevs
integer(psb_lpk_) :: iaggsize, casize
real(psb_dpk_) :: mnaggratio, sizeratio, athresh, aomega
class(amg_d_base_smoother_type), allocatable :: coarse_sm, med_sm, &
& med_sm2, coarse_sm2
class(amg_d_base_aggregator_type), allocatable :: tmp_aggr
type(amg_dml_parms) :: medparms, coarseparms
integer(psb_lpk_), allocatable :: nlaggr(:)
type(psb_d_coo_sparse_mat) :: coo_prol, coo_restr
type(psb_d_csr_sparse_mat) :: acsr
type(psb_desc_type), pointer :: p_desc_a
integer(psb_ipk_) :: debug_level, debug_unit
character(len=20) :: name, ch_err
integer(psb_ipk_), save :: idx_bldtp=-1, idx_matasb=-1
logical, parameter :: do_timings=.false.
info=psb_success_
err=0
call psb_erractionsave(err_act)
if (psb_errstatus_fatal()) then
info = psb_err_internal_error_; goto 9999
end if
debug_unit = psb_get_debug_unit()
debug_level = psb_get_debug_level()
name = 'amg_d_hierarchy_bld'
info = psb_success_
ictxt = desc_a%get_context()
call psb_info(ictxt, me, np)
prec%ictxt = ictxt
if (debug_level >= psb_debug_outer_) &
& write(debug_unit,*) me,' ',trim(name),&
& 'Entering '
!
if (.not.allocated(prec%precv)) then
!! Error: should have called amg_dprecinit
info=3111
call psb_errpush(info,name)
goto 9999
end if
iszv = size(prec%precv)
do i=2, iszv
call prec%precv(i-1)%base_a%cp_to(acsr)
p_desc_a => prec%precv(i-1)%base_desc
call prec%precv(i)%map%mat_V2U%cp_to(coo_prol)
call prec%precv(i)%map%mat_U2V%cp_to(coo_restr)
call amg_ptap(acsr,p_desc_a,prec%precv(i)%map%naggr,&
& prec%precv(i)%parms,prec%precv(i)%ac,&
& coo_prol,prec%precv(i)%desc_ac,coo_restr,info)
end do
call prec%cmp_complexity()
call prec%cmp_avg_cr()
if (debug_level >= psb_debug_outer_) &
& write(debug_unit,*) me,' ',trim(name),&
& 'Exiting with',iszv,' levels'
call psb_erractionrestore(err_act)
return
9999 call psb_error_handler(err_act)
return
end subroutine amg_d_hierarchy_rebld
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